Whether it could threaten the U.S. coast, it's too early to say. For now it's moving in this general direction.

At 2 p.m. on Friday, the large tropical wave was about 800 miles east of the Lesser Antilles, moving west at 20 mph. The National Hurricane Center gave it a 40 percent chance of developing over the next two days.

The other wave was about 175 miles southeast of the Cape Verdes Islands, moving northwest at 10 to 15 mph. The hurricane center gave it a 50 percent chance of developing over the next two days.

The next two named storms will be Irene and Jose.

Meanwhile, after emerging in the western Caribbean on Friday afternoon, Tropical Storm Harvey already is spreading gusty winds and heavy rains over Central America.

At 5 p.m. on Friday, Harvey, the eighth named storm of the season, was about 240 miles southeast of Belize City and near the Honduras-Nicaragua border. It was moving west at 12 mph with sustained winds of 45 mph.

Harvey is projected to make landfall along the Belize coast at close to hurricane strength on Saturday. It could produce up to 8 inches of rain and life-threatening flash floods along its path.